First I want to say thanks for the work.
Also I got a little issue.
If I change some variables in the gadget, for example switch from LTC/BTC to LTC/USD, nothing happens.
After I restart the sidebar I noticed the gadget spams the API Server with requests.
Am I doing something wrong?
Check the values under "Updates" section in settings. They might be too low. For example, for exchange data update interval in seconds, if you're not a trader, 600 (seconds, or 10 minutes) is quite enough. Also, if you're having multiple instances of the gadget, be aware that they will all refresh as soon as sidebar starts them, as soon as they start.